I don't feel that the extra turns per year will really be a big addition to the game. I feel a lot more can be said for the ability to levy troops from client states. Sadly, the guys that made the latest "Let's Play" for CA don't feel the same way. I think it's a pretty good representation of how much CA, as well as the customer base they seem to be aiming for, seem to care more about graphics rather than actual gameplay.
It's really stupid for me to give my opinion on the topic without even owning the game, but I feel I've read and seen so much I can actually say something. The 1TPY wasn't a bad idea at all, it fits the map scale very well, and aids to properly represent empire expansion, in terms of the space-time relation (at least, from my point of view, better than RTW). The thing was that they didn't add anything really important to make up for it. Sure, they added politics, but it seems to be that it's entirely possible to run a campaign by barely paying attention to it (I believe that some players even play around it to have the civil war at a point of their choosing). Therefore, family members are barely 30-turn-faces for your armies, and not much more than that. With a family tree, and a real politics system (not as complicated as the EU series, but it would be a nice source of inspiration) individual characters (with their family history and their life achievements) could really feel as if they're doing something in your campaign, as if they're real people doing stuff in your empire.